Plunger for bottle-machines.



PATENTED JUNE 4, 1907.

2 SHEETS-$11321 1.

R. JOHNS. PLUNGER FOR BOTTLE MACHINES.

APPLIOATION FILED 00112, 1906.

No. 856,067. PATENTED JUNE 4, 1907.

- IR. JOHNS.

PLUNGER FOR BOTTLE MACHINES.

APPLICATION FILED OCT. 12. 1908.

2 SHEETS-SHEET 2.

INVENTOH E0 eri Jbfuw By WWW/r60 plunger cool are blasts o com ressed air and water.

' UNITED vs ra rns PATENT 0mm,

ROBERT JOHNS, OFFAIRMONT, WEST VIRGINIA, Assieuon OF ONE-THIRD.

TO JOHN B. JOHNS AND ONE-THIRD TO FAIRMONT, WEST VIRGINIA.

Specification of Letters Patent. Application filed October 12, 1906 Serial Nor 838,579.

WILLIAM of. JOHNS, BOTH or PLUNGER FOR. BoTrLE-mAoI-nNEs.

' Patented June 4, 1907.

To all whom it may concern:

Be it known that I, RonERrJoHNs, a citizen of the United States, and a resident of Fairmont, in the county of Marion andState of West Virginia, have invented a new and Improved Plunger for Bottle-Machines, of which the following is a full, clear, and exact description.

The purpose of the invention is to provide an impro ved construction of plunger whereby to preserve a proper and uniform-dc cc of temperature necessary to the success 1 0 eration of suohlplungers .as are commo y used as a part 0 machines and presses employed in the manufacture of bottles, jars and other tubular glass ware.

The plunger is an essential portion of an; and all jar and bottle machines and in connection with the blank molds and top rings forms the head, mouth and throat of the jar below a searing heat it cracks the glass against which it is pressed.

The little variation that lass will tolerate between sticking when too Iiot and cracking when too cold has always made the plunger a perplexing roblem and has always been a pause of muc annoyance and considerable oss..

The. means heretofore employed and of which I have knowledge for keeping the air from a fanand In all of these met ods a constant stream is a plied to or run through the plunger, andundhr the most perfect arrangements of any or all of these means only partial success is obtained.

I am aware that a plungerphas been employed having a chamber through which a constant stream of water is passed, but in this system if the rate of work is changed,

which is frequent and unavoidable, a too hot or a too cold plungeris the result.

'Iaim to overcome the foregoing difficulties by manually or automatically, prefer ably .the latter, running water through the plunger during the actual time it isin the molten glass, and stopping the fiow of water f whenthe plunger is withdrawn.

A further purpose of the invention is to attach the devicesfor controlling the water valve to the machine or press so that the said valve is opened by the motion of the machine as the plunger descends intov the glass, and is closed by theretu rn motion as the plunger 1s withdrawn; therefore, since the water passes through the plunger only while it'is 1n the glass said plunger oreserves an even tem erature, no matter what the rate of pro uct maybe.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth and pointed out in the claims.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is, a front elevation of the machine for making glass bottles having the improved plunger applied; Fig. 2 is an enlarged central longitudinal section through the plunger, the section being taken substantially on the line 2.2 of Fig. 3; and Fig. 3 is a horitiall consists of a base A, from whichparallel zontal section through the plunger, taken i fixe 4 pillars or posts 10 are carried upward;

and theseposts or pillars at their upper ends extend loosely through eyes 11 formed. at the end portions of a cross head 12, the cross head being adapted to have sliding movement on'said posts or pillars, and suitable collars13 are secured tosaid posts above the eyes of the cross -head., I A carriage B-i's provided for the plunger'C.

This carriage may be of an approved construction. As illustratedit consists of a tral portion of the cross-head 12 and through nuts 15' and 15? at the top and bottom por- I tions of said cross head vas shown in Fig. 1.

i The lower end of the said screw rod' 14 is .swiveled or equivalently secured within thesocket center 16 of a cross bar 17, having eyes -18'at its ends, adapted for free slidingmovement on the posts or pillars below the 1 cross-head 12.

provided with upwardly-extending opposing I enlargements at the opposite sides of the up The cross bar 17 is usually provided, which consists of an upper plate member 22, through which the threaded rod 14 passes, and other nuts 23 above and below the central portion of sa' plate member 1 22, together with a lower ircular plate 24, which is adapted at the downward movement ,of the carriage to engage with'the upper edge of the blank mold A that ma be employed, as is shown by dotted lines in ig. 1. Rods are, secured to the bottom circular 4 plate 24 of the gage, and these rods extend up loosely through the top plate of said gage;

-an'd said rods 25 are surrounded by springs 28 and 'are'provided at their upper ends with suitable nuts 2.9,which engage with the upper faceof an upper gage plate 22.

An openi 25 is made in the central portion of the ottom' plate 24 of the gage, throughv which, opening the working end of the plunger is adapted to extend and through which its body portion may pass ;-and said opening is provided with a downwardly-ex- .tending marginal flange 26, which flange enters the mold when the gageis'in its lowest ,position. The said bottom plate 24' of the gage is also provided. with upwardly-extend" mg guide rods 30, that pass loosely through openings in the end portions of the cross bar 1 7 The plunger (3' is illustrated in detail in Figs, 2 and 3; and comprises a head section 0,

- provided withan integral cooling finger c,

andthe plunger proper orbody section o The cooling, finger is made in three decreas ing diameters. The upper ortion 31, which isqof the greatest diameter ut of less diame-- ter than. the shank of the head member, is

A provided with an exterior thread 32.; the next section- 33 is'of still less diameter and is plain, and the last-or lowest section 34-is of still less diameter and of greater length than'theother sections. 'By reason of the aforesaid step- J I iping of*the cooling finger, two annular shoul 6o ders 35 and 36 are formed.

Intheshank member of the head a of the plunger C, a horizontal receivingchamber 37 is provided, and an opposing discharge-cham-' ber $7, the'two:chambers being separatedby .a partition 39. inlet pipe 40 connects with the chamber 37 while an outlet pipe 41 connects with the chamber 37 and two parallel channels 42 and 42* extend the full length of the cooling finger, crossing the receiving and the outlet chambers, which are adapted to receive a liquid, water for example, the channel 42 being the receiving channeland the channel 42 the discharge channel. The main or body section 0 of the plunger is provided with an interior chamber, formed correspondingly to the exterior of the cooling finger c; and the body or main section 0 is screwed upon the threaded section 31 of the said cooling finger, and is provided with exterior recesses 44, whereby a spanner wrench may be applied to said body section of the plunger to secure it to the head section or unscrew it therefrom without dislodging said head section from the carriage and without interfering with the cooling finger.

A seat 45 for the bottom of the cooling finger is provided at the lower portion of the main or body, section a ofthe plunger; but the said cooling finger does not rest directly upon this seat, but upon an interposed copper gasket 46, which provides an effective water seal at that oint, and compels the water to follow the c annels 42 and 42.

Immediately below the seat 45 in the body or main section 0 of the plunger, a cooling chamber 47 is created, and said cooling chamber 47 is provided witha downward extension '48 of less diameter, that occupies a central position relatively to the lower end or point of the plunger, and extends nearly to its lowest extremity, as shown in Fig. 2. The outlet channel 42 is directly in-communication with the cooling cha'mber 47; but the water-entering at the receiving channel 42 in passing out from said channel is received in a tube 49, made of low brass and which extends fromthe upper portion of the cooling chamberand down into the upper central portion of the extension 48 of said chamber, so as to direct the cooling water to the point in the plunger where it will accomplish the best results.

In practice, the headofthe plunger C is received partially within the socket section 16 of the crossbar 17, and the under portion of the head rests against the arms 20 below the said socket section as is shown in Fig. 1. The receiving pipe 40 is provided with an outer extension 50, and in this extension a valve 51 is provided, and said extension pipe 50 is connected with a flexible pipe or tube 52, connected with any source of liquid supply; and .a suitable outlet lpipe for the water 1s connected with'the out et ipe 41 of the plunger head. The plug of t e valve 51 is providedwith an attached arm 53, and this arm ,rpasse's loosely through an eye 54 which is at the lower-end of a fixed arm 55, secured pref- ;erabl fto'the upper end of one of the posts or pil are 10 as is shown at 56 in Fig. 1. The

carriage is moved upward and downward by means of connecting rods 57, pivotally at-' tached to the end portions of the cross head 12, and by means of straps 58 with eccentrics 59 secured on the drive shaft 60 usually located below the base A, and mounted to turn in brackets 61.

In operation, as the carriage descends and the plunger C enters the mold A, water is automatically turned on by reason of the valve 51 being opened at that time by the upward movement of its attached arm.53, and water will be constantly supplied to the said plunger during the entire time the plunger is in the mold. However, as soon as the plunger leaves the mold, the arm 53 is pressed downward at the upward movement of the carriage B, thus closing the valve 51 and cutting off the supply of water, which supply remains cut off until the plunger again descends.

Having thus described 411 invention, I claim as new, and desire to secure by Letters Patent,

1. In machines formaking hollow glass ware, a plunger having an inlet and an outlet for liquid, and means for turning on the liq-' uid supplied at the working stroke of the plunger and cutting off such supply on the return stroke of the plunger.

2. In machines for makin hollow glass ware, a sliding support, a p unger carried thereby, provided with a coohng finger, means for supplying liquid to and discharging liquid from the plunger through its cool-- ing finger, and devices for automatically turning on the supply of liquid on the working stroke ofthe plunger and cutting off such supply at the return stroke.

In a machine for making hollow glass ware, guides, a carriage mounted to slide on the guides, means for moving said carriage up and down, aplunger supported by the carriage, for supplying liquid to the plunger and discharging liquid therefrom, a valve lo cated in the supply medium, an arm extending from said valve, a stationary receiver for the said arm, through which the arm loosely passes, which receiver is independent of the carriage, whereby on the down stroke of the carriage and plunger water is automatically supplied to the latter and is automatically cut ofi at the up or return stroke of the carinlet and outlet channels for liquid in its cooling finger, and liquid receiving cooling chambers in the body of the plunger beneath said fingers, the receiving channel being provided with an added tube which extends therefrom centrally into said cooling chamber, and means for supplying liquid to the plunger at its downward stroke and cutting ofi' said supply at its upward stroke.

5. In machines for making hollow glass ware, a plunger consisting of a head, a cooling finger integral with the head, and a main body having screw connection with said cooling finger, the said body or main section being provided near its lower end with a metal gasket, upon which gasket the lower end of. the cooling finger bears when the parts of the plunger are assembled, the main or body portion of the plunger being pro- 'vided with a cooling chamber below the said gasket, constructed in two diameters, its upper portion being of the greatest diameter, the head being provided with a liquid-receiving chamber and a liquid discharging chamber, the cooling finger being provided with a liquid-receiving channel and a liquiddischarging channel, both in communication with said cooling chamber of the main or body section of the plunger, and a tube which extends from the outlet of the receiving channel into the cooling chamber of the body of the plunger, occupying a central position at its outlet end within said cooling chamber. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

. ROBERT JOHNS. Witnesses:

FREDERICK T: MARTIN, ARTHUR G. MARTIN. 

